
Test sumativ Clasa a IX-a
Authored by Nicoleta Tudorache
Mathematics
10th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Se dă funcția f:ℝ→ℝ, f(x)=2x - 1. Valoarea lui f(2) este egală cu:
2
-3
3
-1
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Semnul funcției f: ℝ→ℝ, f(x)= - 2x-3, pe intervalul (-∞, -3/2) este:
Descrescătoare
Minus
Crescătoare
Plus
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Rădăcina funcției f: ℝ→ℝ, f(x)=3x+9 ste egală cu:
-2
3
-3
2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Funcția f:ℝ→ℝ, f(x) = x2 +1 este o funcție liniară.
Adevărat
Fals
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Rădăcinile funcției f:ℝ→ℝ, f(x)=5x2+2x-7 sunt:
-1 și 3
-1,4 și 1
1 și 1/2
2 și -3
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
{1 ; 2}
[1 ; 2]
(1 ; 2)
(-∞; 1)∪(2;+∞)
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
{1 ; -4}
{-1; 4}
{0; 2}
{-1; -4}
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